- A
Change the pipeline to use batch mode instead of streaming
Why wrong: Batch mode does not address real-time processing requirements and may increase latency.
- B
Switch to Dataflow Prime to enable vertical autoscaling and right-fitting
Dataflow Prime automatically adjusts resources for optimal performance under varying loads.
- C
Use a larger machine type for all workers
Why wrong: Uniform machine type may waste resources during low load and still fail under high load.
- D
Increase the number of workers manually in the pipeline configuration
Why wrong: Manual scaling is not as responsive and may not handle load spikes efficiently.
Question 282 of 1,000
PDE Ingesting and Processing the Data Practice Question
This PDE practice question tests your understanding of ingesting and processing the data. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a Dataflow pipeline that reads from Pub/Sub, transforms data, and writes to BigQuery. The pipeline uses classic templates and is deployed in batch mode. They notice that the pipeline does not scale well under high load, causing a backlog in Pub/Sub. Which improvement would BEST address the scaling issue?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Switch to Dataflow Prime to enable vertical autoscaling and right-fitting
Dataflow Prime provides vertical autoscaling and right-fitting, automatically adjusting resources to handle variable loads, which is ideal for streaming pipelines with bursty traffic.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the pipeline to use batch mode instead of streaming
Why it's wrong here
Batch mode does not address real-time processing requirements and may increase latency.
- ✓
Switch to Dataflow Prime to enable vertical autoscaling and right-fitting
Why this is correct
Dataflow Prime automatically adjusts resources for optimal performance under varying loads.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a larger machine type for all workers
Why it's wrong here
Uniform machine type may waste resources during low load and still fail under high load.
- ✗
Increase the number of workers manually in the pipeline configuration
Why it's wrong here
Manual scaling is not as responsive and may not handle load spikes efficiently.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Ingesting and Processing the Data — study guide chapter
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FAQ
Questions learners often ask
What does this PDE question test?
Ingesting and Processing the Data — This question tests Ingesting and Processing the Data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Switch to Dataflow Prime to enable vertical autoscaling and right-fitting — Dataflow Prime provides vertical autoscaling and right-fitting, automatically adjusting resources to handle variable loads, which is ideal for streaming pipelines with bursty traffic.
What should I do if I get this PDE question wrong?
Identify which PDE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This PDE practice question is part of Courseiva's free Google Cloud certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PDE exam.
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